23336021 has 2 divisors, whose sum is σ = 23336022. Its totient is φ = 23336020.

The previous prime is 23336003. The next prime is 23336023. The reversal of 23336021 is 12063332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16313521 + 7022500 = 4039^2 + 2650^2 .

It is a cyclic number.

It is not a de Polignac number, because 23336021 - 2⁶ = 23335957 is a prime.

It is a super-2 number, since 2×23336021² = 1089139752224882, which contains 22 as substring.

Together with 23336023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23335984 and 23336002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23336023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11668010 + 11668011.

It is an arithmetic number, because the mean of its divisors is an integer number (11668011).

Almost surely, 2^23336021 is an apocalyptic number.

It is an amenable number.

23336021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23336021 is an equidigital number, since it uses as much as digits as its factorization.

23336021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 23336021 is about 4830.7371073160. The cubic root of 23336021 is about 285.7649339140.

Adding to 23336021 its reverse (12063332), we get a palindrome (35399353).

The spelling of 23336021 in words is "twenty-three million, three hundred thirty-six thousand, twenty-one".